Proto 1/4-Inch Drive Torque Screwdriver, 4%, 7–36 In-Lbs, Aircraft-Grade Aluminum (J6106A)

The Proto J6106A 1/4-Inch Drive Torque Screwdriver delivers precise torque control with a ±4% accuracy (clockwise, 20%–100% of full scale), a laser-marked easy-to-read scale, and a positive self-locking lock ring. Built for industrial heavy-duty applications, it features aircraft-grade aluminum construction, an aircraft-quality spring, and a floating three-point reaction system for exceptional repeatability.

A 1/4-Inch Square to 1/4-Inch Hex adapter is included for compatibility with standard insert bits. This screwdriver meets or exceeds ASME B107.14M standards, and N.I.S.T.-traceable certification is available with model J6106ACERT — making it ideal for aerospace, manufacturing, and precision assembly environments.